Loom.



SLTOYODA.

LOOM.

APPLICATION FILED DEG. 26. 1906. 920,503 I Patented May 4, 1909. 5 SHEETS-SHEET 1.

S. TOYODA.

PatentdMay 4,1909.

-& SHEETS-SHEET 2- rid ima es: 9/15 S. TOYODA.

LOOM.

APPLICATION FILED DEG. 26. 1906.

Patented May 4, 1909.

5 SHEETS-SHEET a. I

s; TOYODA.

LOOM.

APPLICATION FILED DEC. 26. 1906.

Patented May 4, 1909.

5 SHEETS-SHEET 4 "ill S. TOYODA.

LOQM.

APPLICATION FILED DEC. 26. 1906.

Patented May 4, 1909.

5 SHEETS-SHEEI 5.

jizc 'crz far:

Z m.9. J

6 w wl SAKIOHI TOYODA, OF NAGOYA, JAPAN.

LOOM.

Specification of Letteis Patent.

Application filed December 26, 1906. Serial No. 349,560.

To all whom it may concern:

Be it known that I, SAKIGHI TOYODA, a subject of the Emperor of Japan, residing at Shimasaki-Cho, Nagoya, in the Empire of Japan, have invented certain new and useful Improvements in Looms, of which the following is a full, clear, and exact description.

This invention relates to improvements in looms and has for its object the provision of a construction wherein a. circular disposition of the warp threads is provided and wherein a circular, reed is employed, to which motion is imparted in such a manner that the filling of the weft is accomplished successively.

The invention also includes an improved form of shuttle; which, in the preferred construction, acts by gravity and travels through and carries the weft between the sheds which are successively formed by mechanism which comprises a plurality of heddle frames, disposed in circular order about the loom and below the reed and which are successively shifted in opposite directions to form the s red.

The invention will be more fully described in connection with the accompanying drawings and will be more particularly pointed out and ascertained in and by the appended claims.

In the drawings: Figure 1 is a vertical section of a loom embodying the main features of my invention, taken on line 11 of Fig. 3. Fig. 2 is a front elevation, partly in section, taken on plane indicated by line 22 of Fig. 3. Fig. 3,is atop plan view of the loom as shown in Fig. 1. i Fig. 4 is a sectional view on line 44 of Fig. 1. Fig. 5 is a sectional view on line 5-5 of Fig. 1. Fig. 6 is a sectionalview on line 6-6 of Fig. 1. Fig. 7 is a view of a portion of the shifting mechanism for the heddle frames developed in elevation. improved shuttle s owin a portion of the reed and reed frame. F1 9 is a sectional view taken on line 9-9 ofi ig. 8. r Fig. is a side elevation of the shuttle shown in Fig. 8. Fig. 11 is a detail sectional view on line 1111 of Fig. 7.

In the drawi s similar numerals of reference designate li e parts, the numeral 1 indicating the base of the loom which may be of any desired form and which, as shown, is provided with a centrally disposed bearing 2. A main operatin shaft 3 is seated at its lower end in the with an upper bearing 4 and with an inter- Fig.:' 8 is a plan view'of the caring 2'and is provided.

of a standard 6 rising from the base 1 w ich provides a bearing 7 for a driving shaft 8 operated from any convenient source of power. gear 9 which meshes with a bevel gear 10 keyed to the operating shaft 3, said gears being proportioned in relation to each other in a manner to cause two revolutions of the operating shaft 3 to one revolution of the shaft 8. The shaft 8 carries a master bar operating cam 11 the purpose of which will be hereinafter more fully described.

Upon the base 1 there is provided a plurality of warp beams 12 mounted'in bearings 13. The warp threads 14; extend upwardly from the warp beams and are engaged by a tightening ring 15 secured to any convenient stationary part such" as lugs 16.. The warp threads 14 are next engaged by an improved warp tightener which operates successively to tighten sections of warp threads and en gages the same in a substantially horizontal plane, the tightener being so arranged and timed in its action with respect to the shedwhen the same are filled and to loosen the warp threads when the shed is formed. This im roved tightener consists as shown of a plura ity'of radially movable segments 17 provided with outwardly dis osed warp thread engaging portions 18 an recessed at 19 to" afford a bearing surface for an annular ring 20. Said ring 20 is rigidly mounted upon a supporting plate 21 secured to the standard 6.. p

In order to provide the segments 17 with a continuous warp engaging surface 18 and to prevent gapping at the ends of the segments when the same are radially displaced, the ends of said segments are provided with mounted upon the supporting plate 21 and cam 26 rigidly shaft 3 engages the rollers and serves to successively shift the segments 17 outwardly.-

Patented May 4, 1909.

- mediate bearing. 5. Said bearing 5 is sup-- ported and preferably forms an integral art The driving shaft 8 carries a bevel 1 ding mechanism, which will be hereinafter described, as to tighten the warp threads 7 overlapping portions 22, which overlapping 18 similar to that formed by the bodies ofi segment is provided with an arm 23 which projects through a bearing 24 preferably carries at its inner end a cam roller 25. -A

mounted upon the operating in Fi 2 rior to their en a ement with the I b b b harness. The warp threads 14 are next passed through the harness which, as shown, consists of a plurality of pairs of heddle frames 31 and 32, the frames of each pair being dlsposed ln'superposed relation and ope-r atmg in a substantially horizontal plane and arranged in circular order about the loom, as clearly shown in Fig. 5. The construction of the harness and the operating mechanism therefor will now be described in. detail.

Each of the frames 31 and 32 consist of inner and outer bars 33, 34, 35, 36 upon which the heddles 37, 38 are mounted, each heddle being provided with the usual eyes 39 and. 40 through which the Warp threads 14 are threaded. The heddle bars of each frame are mounted upon actuating rods 41 and 42 which find bearings at their outer ends in pivotally mounted blocks 43, said blocks being ivoted to any suitable stationary part, as s iown in Fig. 5. The rods 41 and 42 extend through the bars constituting the heddle frames, (said bars being rigidly secured to the rods) and carry on their inner ends cam engaging rollers 44 and 45.

Each pair of heddle frames is supported by a vertically movable shifting bar 46, of which there are twelve in number, one of said shiftin g bars 46 will be herein after referred to as the master bar. The rods 41 and 42 of each pair of heddlc framesextend through the upper end of one of said shifting bars, as clearly shown in Fig. 1, and are slidably mounted therein and in shedding the warp 1 preferably connect each pair of heddle frames y a reversing strap or cable 47., secured at its outer ends to the inner bars of the frames and trained about a pulley 48 secured to the corresponding shifting bar. The rollers 44 and 45 of the heddle rods engage a cam 48) mounted upon the operating shaft 3. In one revolution the cam 49 engages all of the rollers of 'the uppermost heddle frames shifting the latter outwardly and through the medium of the reversing cables 47 the lower set of heddle frames is forced inwardly. In

- order to reverse the reciprocation of the harness and the formation of the shed, the heddle frames are shifted so that in the next revolution of the cam 49 the same enga es the rollers 44 of the lowermost frames shifting the latter outwardly and, through the medium of the cables 47-, shifting the upper frames inwardly.

Each pair of plish the foregoing"operation at a point adjacent the smallest diameter of the cam 49 which is'indicated in Fig. 6 by 49*, the

greatest diameter being indicated by 49*,

frames is shifted to accomand the cam and heddle' rods are so pro-' portioned that, during the shiftin operation, the pair of frames to be shifted is ocated one directly above the other, the rollers of said frames being in exact vertical alinement. This operation is effected by the master and shifting bars in the following manner, reference being had to Figsl, 2, 6 and 7. Each of the shifting bars and the master bar are slidably mounted at their upper ends in a guide ring 50 and the master bar and each shifting bar is provided with a in or stop 51 and 51- respectively, adapted said ring 50 to limit downward movement of the bars. Said ring 50 is mounted upon the supporting plate 21 preferably by means of rods 52. Near their lower ends each bar is provided with a roller 53, the roller of the master bar being indicated by 53 A shifting member preferably in the form of a disk 54 is rigidly mounted upon the operating shaft 3 and is of sufficient diameter to project slightly beyond the planes of rotation of said rollers 53 and 53, leaving a working clearance between the outer periphery of said disk 54 and the shifting bars, thereby permitting the disk to rotate freely without engaging the same. At one point of the periphery of the disk 53 a recess-55 is provided of suilicient width and depth to permit the rollers of any of the several bars to pass n wardly or downwardly therethrough, as

c early shown in Fig. 6. Each of the bars 46 is connected with the master bar 46 and with each other by means of a plurality of links 56. Asshown, each link is connected with three bars, the connection of the outermost ends of each link being a ivotal connection and the connection at t e center of each link being a yielding connection.

Referring to Fig. 7, the first link, which is designated as 56, is pivotally connected to the master bar 46 and with the second shifting bar 46. Intermediate of its end said link 56 is connected with the first shifting bar 46 in the following manner, reference being bad to Fig. 11. ing bar 46 is recessed-at57 and is provided with a slidably mounted link block 58 which preferably fits in the recess 57 with a close working clearance and is retained therein by ribs 59, which project into recesses 60 formed in said blocks. Said ribs 59 may be secured in place in any desired manner. A spring 61 is interposed between the block 58 and the upper end-of the recess 57 and is secured at its upper end to the top wall of said recess. The master bar 46 extends below the bars 46 preferabl support-ing plate 21, and, ass own in *ig. 1, carries at its lower end a cam roller 62, adapted to be engaged and'shifted by the cam 11 mounted upon the driving shaft 8.. The cam 11 and the disk 54 are so timed that at each second revolution of the disk 54 to engage Each shiftthrou' h the iso the recess 55 twice registers with the roller 53 of the master bar 46 :and the cam 11 its roller rides upon the upper face of the disk54, thereby raising the next link 56 of roller of the master bar and the the second bar 46 and compressing the s ring 61 of said bar, each of the ten bars will be successively raised in this manner, as the recess 55 of the disk 4 successively registers with'the rollers of said bars. When the disk 54 has made one revolution all of the bars will have been raised so that-their respective rollers engage the up er face of the disk 54 and at this point of t e operation the recess 55 will again be in a position ad'acent the latter will descend by gravity until its limit of movement is arrested by its stop 51 engaging the guide 50. As before described, the cam 11, makinmone revolution to two revolutions of the dis 54, will at this time be in its lowermost position and will permit the master bar to descend freely As the recess-55 registers with the rollers of the follower bars 46, the latter will successively descend to, their lowermost position-until the recess 55 again reaches the master bar whereupon the cam 11 will engage the roller 62 and raise the master bar, as hereinbefore described.

In order that the shifting movement of the master and follower bars may occur when the heddle frames are in exact vertical alinement andv when the rollers of the alined heddle a manner to bring frames are opposite the point 49 of the cam 49, the latter is disposed upon the shaft 3 in the point 49 in alinement with the recess 55. H g The improved reed andshuttle will next be described in detail, reference being bad to Figs. 1, 2 and 3 in the description of the reed and the mechanism for operating the same. The reed of this improved loom is preferably of circular formation and consists preferably of a'plurality of bars 63 mounted at their inner ends in a frame 64. Abearin'g plate 65 mounted on the frame 64 forms with the latter a central bearing portion adapted for engagement .Withasphere or ball 66 mounted upon the operating shaft 3 and resting upon a shoulder 67 formed by'a reduction of said shaft. The inner faces of the frame 64 and the bearing plate are of. complemental thereof thereby 6 5 formation and engage the ball'66 at its greatest diameter and at points laterally providing a mounting for the reed frame in a bars 63 ma'nnerto permit universal movement thereof. It will be understood that any form of mounting may be used permitting universal movement of the reed frame other than the construction shown. The frame 64 is provided with a track 68 on its under face adapted to be engaged by the track 68 the reed frame 64 is raised from the posit-ion shown at the left of Fig. 1 to the position shown at the right thereof, thereby imparting to the reed-frame a gyratory movement. In order to hold the frame tightly upon the rollers 69 and 70 a support 74 is rigidly secured to the shaft 3 and carries wheels 75-which engage the bearing plate 65. The outer ends of the bars 63 are secured between a shuttle ring 76 and a clamping ring 78. In order to prevent rotary movement of the reed frame under the influence of the rollers 69 and 70, the shuttle ring 76 slotted at four or more points to receive guides 79. The shuttle ring 76 is also. provided with'a flange 80 adapted to the shuttle 81 as the latter travels around the reed frame in the operation of forming the fabric. As clearly shown, the warp threads .1 4 extend from the harness through'alternate and therefrom in any convenient manner to a suitable receiver such, for instance, cloth or yarn beams not herein shown.

I will next describe the improved shuttle and the manner in which the same operates upon the reed, reference being had to Figs. 8, 9 and 10. The shuttle 81 is )rovided with an outer convex surface 82 substantially complemental in form to the curvature of the flange SO and in order to reduce frictional engagement. of the shuttle with said flange the former is provided with rollers 83. The forward end of the shuttle converges as shown to a chisel edge 84 to insure its passage between the shedded warp threads and the rearward end is flat While the inner side 85 of the shuttle is curved slightly to conform to the course in which the shuttle travels.

be engaged by I The bottom and top Walls of the shuttle are preferably fiat and there is provided two wheels 86 located at the rear and one Wheel 87 located at the forward end of the shuttle upon which the latter is supported. The

shuttle is centrally reeessedto receive the bobbin 88 and the latter, as shown, lSfilOUllted 'upon the spindle 89 pivotally secured at An arm 91. rigidly secured to the shaft 3 and provided on its outer end with a roller 92 travels behind the shuttle and serves, if the movement of the shuttle should be accidentally or otherwise arrested,.to engage the &

by the roller 69 in Fig. 1, the shuttle will have traveled to the opposite or right hand portion of the reed by gravity, the gyratory movement of the reed causing the shuttle to continuously travel in a circular path the outward movement being limited by the flange 80.

The operation will be obvious from the foregoing. Assuming that the parts of the loom are in the position shown in Fig. 1 and that the operating shaft 3 is rotating to the left or in a contra-clockwise direction, it will be obvious that the gyration of the reed will be suchas to drive the shuttle in the same direction asthe shaft 3 rotates, the cam 49 and the disk 5.4 rotating in prescribed relation with res ect to the bracket 71 and serving to cause the mechanism operated thereby to successively operate the harness in a manner to shed the war in sections at points adjacent to the shutt e and at portions of the reed occupying the lowermost position. After the shuttle has passed through the shedded sections of the war that portion of the reed will be raised as sliown at the right of Fig. 1 in a manner to fill the weft and form the fabric, the filling of the weft being effected successively the same as shedding of the warp. Thus, in one com lete revolution of the reed the shuttle will ave made a revolution and a half and the warp will have been successively shed and the weft filled in throughout the length of the fabric.

, It will be obvious that many different widths of fabric may be. woven by means of this improved loom it being merely necessary to substitute for .the length of the war beams shown, substitute beams of a widt 1 equal to the width of the fabric it is desired to weave. It will further be obvious that a loom constructed in the manner. set forth can be operated with awery material decrease of power usually necrfssary for a like amount of work inasmuch as the owef required is always uni-form and the s ocks incident to the usual shuttle icking mechanism and long sets of heavy arness are entirely avoided. Furthermore a loom made in accordance with the invention disclosed can be operated 'at a very much higher 3 eed than looms of that class wherein the s uttle is driven in reverse directions and wherein the weft is filled by a reciprocating reed.

I cla1m: q

1. A loom comprising in combination a means for s ifting said master bar, said yieldharness composed of a plurality of airs of heddles, means for o crating said he dles to shed the warp, a shi ting bar for each pair of heddles, links connecting-said shifting bars, said links having yielding connection with certain of the bars, a shifting member with which said bars 006 erate, and means for shifting one of said ars, said ielding conpections successively shifting t e remaining ars.

2. A loom comprising in combination a harness composed of a plurality of pairs of heddles circularly disposed, a master shifting bar for one pair of heddles and shifting bars for each of the remaining airs of heddles, links connecting the sai bars, said links havin yielding connections with certain of said bars, a rotary disk provided with a recess, rollers for said bars adapted to engage the o osite faces of said disk, and

ing connections successively shifting the remaining bars.

3. A loom. comprising in combination a circular warp tightener composed of a plu rality of segments, and means for operatin said segments to successively tighten the.

warp.

4. A loom comprising-in combination a warp tightener composed of a, plurality of segments having overlap ing portions, and means for o crating sai cessively tig iten thewarp.

'5. A loom comprising in combinations. circular reed, a shuttle therefor, means imparting movement to said reed to successively fill the weft and operate the shuttle, a harness composed. of a plurality of heddles circularly disposed, means for operating'said. heddles to successively shed the warp, a air-- cular warp tightener, and means for operating said tlghtener to successively tighten the warp.

6. A loom comprising in combination a circular reed, a shuttle, means imparting to the reed a gyratory motion to successively fill the weft and operate the shuttle, a har-' ness com osed of a plurality of circularly dis osed lieddles, means for o crating said he dles to successively she the warp,

means for shifting said heddles to reverse the shedding movement thereof, a circular wasp tightener, and means for operating sai tig itener to successively tighten the warp reed structu're, means imparting gyratory movement thereto to successively fill the weft, and means having slidable engage-' ment withouter peripheral portions of said y an operating bar connected to each pair of segments to suc- I x u I 7 A loom comprising incombmation, a

heddles, and means for operating said bars means for changing or reversing the shedto reverse the shedding movement of said ding movement.

heddles. I 11. A loom comprising in combination, a 9. Aloom comprising'in combination, a i harness composed of a plurality-0f aiisof harness composed of a plurality of pairs of heddles, means for operating said he dles to heddles, means for operating said heddles to shed the warp, an operating bar connected shed the warp, an operating bar supporting i with each pair of heddles, one of said bars each pair of heddles in operative re said means, and means for moving said bars bars with each other, means actuating said to alter the position of said heddles with remaster-bar for shifting the same to revelse ation to 'being a master-bar, devices connecting said.

spect to their operating means to reverse the sheddingmovement of the heddles, said shedding movement. devices serving to effect shifting movement 10. A loom comprising in combination, a of the remaining ba1s,and means for retainharness composed of a plurality of ans of mg said bars in their shifted positions.

- heddles, means for operating said he( dles to In testimony whereof I aflix my signature shed the warp, an operating bar su porting in presence of two witnesses.

each pair of heddles in operative re ation to V SAKICHI TOYODA. said means, and means for successively mov- Witnesses: ing said bars to alter the position of said GEO. H. S'CIDMORE,

heddles m'th respect to their operating UIIAonI ISHIWAZAQ 

